initramfs-test-image: add iw package
initramfs-test-image: add iw package

Add iw package to initramfs-test-image to supplement wpa-supplicant and
to allow controlling of the wifi devices.

Signed-off-by: Dmitry Baryshkov <2dcd7ecf02101ef1dca344c0511f3ffb180907c2@linaro.org>

ndechesne/meta-qcom,ndechesne/meta-qcom,ndechesne/meta-qcom